Vacuum cleaning apparatus

Details Vacuum cleaning apparatus Vacuum cleaning apparatus

A - Human Necessities

47

L

15/61

A47L 7/00 (2006.01) A47L 11/30 (2006.01)

Patent

CA 1264511

ABSTRACT An improvement in the dry vacuum cleaning of soft and hard surfaces in which vacuum only is applied to such surface, is characterised in that dry soil flowing away from such surface under the influence of vacuum is sprayed with liquid and deposited in a wetted condition in a liquid and soil-collecting vessel. Also proposed is apparatus for cleaning hard and soft surfaces by simultaneous application thereto of liquid and vacuum using a tool and which is equipped with a conversion device to permit dry vacuum cleaning with entrainment of dry soil in the liquid for subsequent collection in a soil and liquid vessel. The device comprises a 2-way valve by which liquid flowing through a first pipe can be caused to flow alternatively to a head of a tool, or, through at least one branch pipe to a second pipe or pipe insert by which suction is applied to the head of the tool to entrain the dry soil flowing therein. The branch pipe or pipes normally terminate in one or more spray nozzles and may be located at various different positions in the path of flow of the dry soil induced by vacuum.

473798

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